动物生活的

I had not lived there a week before my feet wore a path from my door to the pondside; and though it is five or six years since I trod it, it is still quite distinct. It is true, I fear, that others may have fallen into it, and so helped to keep it open.

书的内容并不复杂，只是作者在瓦尔登湖林中两年零两个月又两天的生活和思想记录，虽然其中有很多是关于动物和植物的记录，但是却并不只是自然文献。

After weaning, the piglets are kept in batches usually on a concrete slatted floor in a bare concrete box. Any intelligent animal would become bored in such conditions and pigs are no exception.

小猪断奶之后，或是被成群圈养在地面铺着水泥跳板的猪舍中，任何稍具智慧的动物在这样的环境下生活都会感觉无聊，小猪们当然也不例外。

A recent study found the seas acidifying ten times faster than previously believed, with disturbing effects on mussels, oysters and other animals living in coastal regions.

最近的研究发现，海水酸化比以前认为的快十倍，这对蚌类、牡蛎、和其它生活在沿岸区域的动物有干扰作用。

Ten mice were exposed to 75% oxygen for 5 days,followed by 5 days room air recovery, the other ten mice of the same age were kept in room air as colltrol.All animals were killed on day 17 of life and both eyes were enucleated,and embedded in paraffin.

将高氧组10只幼鼠置于氧浓度约为75%的密闭环境中连续生活5d后回到正常环境下继续饲养5天，建立高氧诱导的视网膜新生血管的动物模型。

People are jeopardizing their own quality of life in order to extend the life of an animal.

为了延长某个动物的寿命，使人的生活质量处于危险之中是不可取的。

This useful and inspiring book will open up possibilities for more sacred living through the example of creatures of all types.

这本实用的书，通过各类动物的举例说明，指引我们开创多种更神圣的生活方式。

Animals living in the desert have had to make a number of curious biological adaptations .

生活在沙漠里的动物不得不经历许多奇特的生物学上的适应性变化。

New Zealand is one of the world's richest and most threatened reservoirs of plant and animal life.

新西兰是世界的其中一个动物植物生活最富有和最大的受到威胁的储蓄器。

It's a natural state of any man to want to live free in their own country.

那是动物！人追求的是自由的生活在自己的国家里。

Lower friction and longer life were obtained by adding a lubricant, such as animal or vegetable oil.

较低的摩擦和较长的生活被增加诸如动物或者植物油的一种润滑油获得。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。